3.0 



2.0 



1.0 



METHOD 1 



METHOD 2 



METHOD 3 



EXPERIMENT (SHINTANI) 



O DO. (STROM-TEJSEN) 



Figure 13 - Added Resistance Coefficient of Series 60 



Model for C, = 0.7 and f =0.2 

 b n 



added resistance in waves can show much better agreement. Furthermore, 

 what is really surprising is that the most rational formulation brings 

 sometimes most unrealistic results, while much simpler approximations can 

 often result in much better predictions. This is the attribute of engi- 

 neering and the fun of engineering. Mathematics has nothing to do with 

 this respect. 



Concluding this lecture, I wish to express my sincere thanks to Mr. 

 Justin McCarthy for his kind arrangements which enabled me to have this 

 opportunity, and to Dr. Kwang June Bai and Dr. Ming Shun Chang for taking 

 care of me every day. My thanks also to Dr. Allen Powell, Dr. William 

 Morgan, Dr. Wen-Chin Lin, Dr. Bohyun Yim, Dr. Choung M. Lee, Dr. Thomas 

 Huang and all friends at DTNSRDC for their warm hospitality. 



105 



